From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794064425; b=YSufaf8QJYXkgqBabsY7lRehJMJF7MN5nlKgNZlzLMTEjgzROGgYgBlOPQds9IuMNsxJ YvdKl7Lv2T/yviVfodcN3mpJs1kxWF0jRLwhlYe0QBlPzxKAXGPASy1P4FUuFPyLQ/YOU THqm1JT3cxiRvooW2WluXIJuKlPmx7PLMPQysqbxjxKlRkTAuKl2RAtoJhZTrhF/89Ea+ EOAa14+7tcKIs6sSCzd7NTtMYgc9uRO2J6bU59GtYBaKcuzwDiOUFegUrFt2pasoD8/YZ IvAftAOEZz+KDNGJ8MALnZNAwNZLdFpBUf1vwKGcQ1vulQSprWhlAV3D43522te65nw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794064425; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=GQW6qc9EphUMe/i3EJsbv04YBl++6D6gx7CRahc257Q=; b=cbPnjFz6gLwJR0IJdNn8J/+p7VoQ9Uf4esOTmeTvKg8TWxlKZLQTCmE2Wgvk3yOhXoNw feXU7OI8lN3a4L5OG0lsygR1bGysp4+CmNJcbFo7czFiMUt1qI3kRypPj/X3kzjFZau/W XE9a3pu+c5DnwHehAk6G2nGfqG8XKBs76/LLw5k2UegkCB9+71PnA4UGgrZbUvrY0lxKt pexa1ghQQJCMHzv7LcxL4Jvsvq/+KkRtGJThTL0zvQgEXx7d6+nhmF8h22hqtgaWTbdQJ Wi76/+p7JAgX8fvKHDZMpopAgH56yANGqpeQCCdphpTIJsWnzv1zSrMsnUDY7OYlPUA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=IqjHIjcz; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8B835606EE91; Sat, 7 Nov 2026 15:13:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=IqjHIjcz Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3A1C21F008A2; Sat, 7 Nov 2026 15:13:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794064425; bh=GQW6qc9EphUMe/i3EJsbv04YBl++6D6gx7CRahc257Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=IqjHIjczRx8Ics43ERHJZnca1h1q8LiY9hIZh25ScZDRhwQ+HhZsKZt0OazDQr/lp eITpKbhh7LNArI6W0S9Su1tlzDzfbwsGwWE2EeXQ2bIhxzk9RM9RaLCLaRlh9sno6F 0vRAJW940F7use/3XHkip+oYLiYJyOSeWQqMnKZY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Linus Walleij , Sebastian Reichel , Sasha Levin Subject: [PATCH 7.3 0475/1257] power: supply: ab8500_fg: Report sub-percent charge changes Date: Sat, 7 Nov 2026 08:46:11 -0500 Message-ID: <20261107134952.570962906@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261107134939.434104957@linuxfoundation.org> References: <20261107134939.434104957@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.3-stable review patch. If anyone has any objections, please let me know. ------------------ From: Linus Walleij [ Upstream commit 4d40dba1815d46c6ef9019ed80e3b998b0fc443d ] The fuel gauge updates bat_cap.mah from the coulomb counter but exposes bat_cap.prev_mah through CHARGE_NOW and ENERGY_NOW. It only refreshes prev_mah when the rounded integer capacity percentage changes, making the momentary properties appear frozen between percentage steps. Refresh prev_mah and notify userspace whenever the new charge remains within the currently accepted percentage. If a discharge estimate tries to cross upward into a higher percentage, the existing rejection still leaves both the reported percentage and charge unchanged. The AB8500 fuel-gauge implementations in the Samsung-GT-I8160-Codina, Samsung-GT-I8160_HD-Codina, Samsung-GT-I8530-Gavini, Samsung-GT-S7710-Skomer, Samsung-SGH-I407-Kyle and Samsung-SGH-T599-Codina-TMO product trees retain the same percentage-gated prev_mah update and contain no finer-grained reporting workaround. Fixes: 13151631b5bd ("ab8500-fg: A8500 fuel gauge driver") Cc: stable@vger.kernel.org Assisted-by: LLM Signed-off-by: Linus Walleij Link: https://patch.msgid.link/20260916-ab8500-charging-v1-2-e986ed321cc6@kernel.org Signed-off-by: Sebastian Reichel Signed-off-by: Sasha Levin --- drivers/power/supply/ab8500_fg.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/power/supply/ab8500_fg.c b/drivers/power/supply/ab8500_fg.c index 016ed35e90f91..c5eaa32c4a2d8 100644 --- a/drivers/power/supply/ab8500_fg.c +++ b/drivers/power/supply/ab8500_fg.c @@ -1387,6 +1387,13 @@ static void ab8500_fg_check_capacity_limits(struct ab8500_fg *di, bool init) } } + /* Keep the charge properties current between percentage changes. */ + if (di->bat_cap.prev_percent == percent && + di->bat_cap.prev_mah != di->bat_cap.mah) { + di->bat_cap.prev_mah = di->bat_cap.mah; + changed = true; + } + if (changed) { if (di->bm->capacity_scaling) { di->bat_cap.cap_scale.scaled_cap = -- 2.53.0